Utah student section is students with their pass and can buy 1 ticket for someone at a crazy cheap rate. 75 bucks means whoever bought ur ticket is making maybe triple the cost.
Far as sitting there it's harmless. People will say things but stops there. I sat in the WUSS during a few rivalry games and was fine. Only time it gets heated is if you join in the trash talk and take things over the edge. There are always a good deal of BYU fans in that section because a lot of BYU supporters attend the U. I did myself. I was there in 06 and it was great. Actually 08 as well and a rare instance where a student actually had the sand to walk up a few rows to pretend to make it physical, another ute fan stopped the idiot and SLAPPED HIM!! Not joking it was phenominal!
If a visiting fan is respectful and doesn't take everything personal they'll get the same respect 99% of the time at 99% of the venues